|Season|Competition|Round|Club|Home|Away|Aggregate|
|---|---|---|---|---|---|---|
|2010–11|UEFA Europa League|Q3|Motherwell|1–1|0–3|1–4|
|2011–12|UEFA Europa League|Q1|Neath|4–1|2–0|6–1|
|2011–12|UEFA Europa League|Q2|Ferencváros|3–1(aet)|1–2|4–3|
|2011–12|UEFA Europa League|Q3|Elfsborg|4–0|1–1|5–1|
|2011–12|UEFA Europa League|Play-off|AZ|2–1|0–6|2–7|
|2012–13|UEFA Europa League|Q2|Tirana|5–0|1–1|6–1|
|2012–13|UEFA Europa League|Q3|APOEL|0–1|1–2|1–3|

Question: what is the number of countries that played during the 2011-12 uefa europa league?
Answer: 4